PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1877-2100
1877-2100 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The LOCK,VALVE SPRING RETAINER is a the manufacturer industrial component. Key specifications include material: STEEL, overall_height: 0.500 INCHES NOMINAL IN, style_designator: STRAIGHT BORE W/TWO GROOVES, thread_provision: UNTHREADED, first_groove_width: 0.030 INCHES NOMINAL IN, second_groove_width: 0.030 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2815-00-425-5165, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1877-2100
NSN: 2815-00-425-5165
FSC: 2815
CAGE: 93568 — HARSCO CORP BMY-COMBAT SYSTEMS DIV (USA)
SPECIFICATIONS
materialSTEEL
overall_height0.500 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE W/TWO GROOVES
thread_provisionUNTHREADED
first_groove_width0.030 INCHES NOMINAL IN
second_groove_width0.030 INCHES NOMINAL IN
largest_outside_width0.615 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
largest_inside_diameter0.437 INCHES NOMINAL IN
minimum_inside_diameter0.437 INCHES IN
outside_included_angle_in_deg12.0
distance_from_bottom_to_first_groove_center0.200 INCHES NOMINAL IN
NSN2815-00-425-5165
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LOCK,VALVE SPRING RETAINER TITLE COMPONENT PN 1877-2100 MFR LOCK,VALVE SPRING RETA
KEY FEATURES
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
SECOND GROOVE WIDTH: 0.030 INCHES NOMINAL IN
•
THREAD PROVISION: UNTHREADED
•
LARGEST OUTSIDE WIDTH: 0.615 INCHES NOMINAL IN
•
FIRST GROOVE WIDTH: 0.030 INCHES NOMINAL IN
•
DISTANCE BETWEEN FIRST AND SECOND GROOVE CENTERS: 0.125 INCHES NOMINAL IN
•
DISTANCE FROM BOTTOM TO FIRST GROOVE CENTER: 0.200 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE W/TWO GROOVES
TECHNICAL CHARACTERISTICS (FLIS)
CASEHARDENING INDICATORNOT CASEHARDENED
SECOND GROOVE WIDTH0.030 INCHES NOMINAL IN
THREAD PROVISIONUNTHREADED
LARGEST OUTSIDE WIDTH0.615 INCHES NOMINAL IN
FIRST GROOVE WIDTH0.030 INCHES NOMINAL IN
DISTANCE BETWEEN FIRST AND SECOND GROOVE CENTERS0.125 INCHES NOMINAL IN
DISTANCE FROM BOTTOM TO FIRST GROOVE CENTER0.200 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE W/TWO GROOVES
MINIMUM INSIDE DIAMETER0.437 INCHES IN
LARGEST INSIDE DIAMETER0.437 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
351979-5Interchangeable
interchangeable cross-reference
interchangeable
31463Interchangeable
interchangeable cross-reference
interchangeable
351979PC5Interchangeable
interchangeable cross-reference
interchangeable
895-26980Interchangeable
interchangeable cross-reference
interchangeable
895-26980 FIND 4Interchangeable
interchangeable cross-reference
interchangeable
DE65268Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1877-2100?
1877-2100 is a LOCK,VALVE SPRING RETAINER.
What parts can replace 1877-2100?
There are 6 known substitutes for 1877-2100: 351979-5, 31463, 351979PC5 and 3 more. Substitute compatibility should be verified for your specific system.
Is 1877-2100 still available?
1877-2100 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026